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- Richard O. Duda, Peter E. Hart
- A Wiley-Interscience publication
- 1973

- Thomas M. Cover, Peter E. Hart
- IEEE Trans. Information Theory
- 1967

The case of n unity-variance random variables x1, XZ,. * *, x, governed by the joint probability density w(xl, xz, * * * x,) is considered, where the density depends on the (normalized) cross-covariances pii = E[(xi jzi)(xi li)]. It is shown that the condition holds for an “arbitrary” function f(xl, x2, * * * , x,) of n variables if and only if the… (More)

- Peter E. Hart, Nils J. Nilsson, Bertram Raphael
- SIGART Newsletter
- 1968

Our paper on the use of heuristic information in graph searching defined a path-finding algorithm, A*, and proved that it had two important properties. In the notation of the paper, we proved that if the heuristic function ñ (n) is a lower bound on the true minimal cost from node n to a goal node, then A* is <u>admissible;</u> i.e., it… (More)

- Richard O. Duda, Peter E. Hart
- Commun. ACM
- 1972

Hough has proposed an interesting and computationally efficient procedure for detecting lines in pictures. This paper points out that the use of angle-radius rather than slope-intercept parameters simplifies the computation further. It also shows how the method can be used for more general curve fitting, and gives alternative interpretations that explain… (More)

- Peter E. Hart
- IEEE Trans. Information Theory
- 1968

Since, by (8) pertaining to the nearest neighbor decision rule (NN rule). We briefly review the NN rule and then describe the CNN rule. The NN rule[‘l-[“I assigns an unclassified sample to the same class as the nearest of n stored, correctly classified samples. In other words, given a collection of n reference points, each classified by some external… (More)

- Richard Fikes, Peter E. Hart, Nils J. Nilsson
- Artif. Intell.
- 1972

In this paper we describe some major new additions to the STRIPS robot problem-solving system. The first addition is a process for generalizing a plan produced by STRIPS so that problem-specific constants appearing in the plan are replaced by problem-independent parameters. The generalized plan, stored in a convenient format called a triangle table, has two… (More)

- Richard O. Duda, Peter E. Hart, Nils J. Nilsson
- AFIPS National Computer Conference
- 1976

The general problem of drawing inferences from uncertain or incomplete evidence has invited a variety of technical approaches, some mathematically rigorous and some largely informal and intuitive. Most current inference systems in artificial intelligence have emphasized intuitive methods, because the absence of adequate statistical samples forces a reliance… (More)

- Saul Amarel, John Seely Brown, +4 authors Harry E. Pople
- IJCAI
- 1977

t o t h e sys tem. The b e s t approach i s n o t c l e a r . On a d i f f e r e n t b u t r e l a t e d d imens ion we have obse rved t h a t o u r p r e s e n t i l l n e s s program e x h i b i t s bad m e d i c a l s t y l e . I t o f t e n asks a p p a r e n t l y unneeded q u e s t i o n s ; i t sometimes runs on and on p u r s u i n g e v e r l e s s… (More)

- P E Hart, S M Wolniak
- Biochemistry and cell biology = Biochimie et…
- 1999

Spermiogenesis in the water fern Marsilea vestita is a process that reaches completion 11 h after dry microspores are immersed in an aqueous medium at 20 degrees C. Each microspore produces 32 spermatozoids and each spermatozoid has a coiled cell body and approximately 140 cilia. The spermatids make basal bodies de novo, from a structure known as a… (More)